How to enable high DPI support in PKHeX

[dstaley]

If you use a high DPI monitor with higher than 100% scaling (such as a 4K monitor with 150% scaling), you may have noticed that PKHeX is blurry, and look like this:

In this screenshot you can see that text is quite blurry. This is because Windows is rendering the application at a smaller resolution, and then scaling the image up.

You can actually force PKHeX to render at a native resolution using the following:

1. Right click the PKHeX.exe file
2. Choose "Properties"
3. Click the "Compatibility" tab
4. Click the "Change high DPI settings" button
5. Enabling the "Override high DPI scaling behavior" checkbox
6. Setting "Scaling performed by" to "Application"

Then, when you run PKHeX the UI will render crisply at your native resolution without any lossy scaling!

The above screenshot is with 300% scaling. You'll notice that the higher the scaling factor, the worse certain elements of the UI render. I use 150% scaling and it looks mostly the same:

Hopefully one day I'll find the time to submit a PR making PKHeX truly high DPI friendly, but until then this at least eliminates the annoying blurry UI!

[kwsch]

The screenshots indicate you are using a build that is well over a year old.

[kwsch]

Windows Forms (the GUI library that PKHeX.WinForms uses) is kinda ancient and doesn't really work well with DPI scaling.

In Program.cs, one could add Application.SetHighDpiMode(HighDpiMode.PerMonitorV2); to achieve the same override behavior you are seeing, but it is very clunky when used by setups that have different Dpi monitors. Application.SetHighDpiMode(HighDpiMode.DpiUnawareGdiScaled); is slightly better with keeping the layout, but doesn't get the font crispness for every control, and breaks some behaviors causing weird visuals: